Asian or Opium Scales

Right hand side, you see a few pictures of Opium Scales.
Touch a picture, if you want to see some details.

This scales was in use for Medicals, Spice and Gems and Gold.
Maybe a few times also for OPIUM.
The scales have the same function like a steelyard.
The beam is normal made of ivory, the weight and pan are made
of brass - sometimes silver.
The rare scales use a two-in-one weight and some of them
offer a nice decoration.